Geert Uytterhoeven <Geert.Uytterhoeven@xxxxxxxxxxx> wrote: > > 2. Why was the lazy allocation removed back in 2004? > If you're interested in decompression only, it's a bit wasteful to > allocate 262 KiB of memory for compression and never use it. The burden to save memory was simply moved to the user :) As Sebastian correctly pointed out, the only user of deflate as it is is IPComp (there were some talk about using it for file systems but that never worked out). As such we cannot sleep when operating on the data. Since we're allocating more than a page worth of memory, it must be allocated in a process context. That's why the lazy allocation was removed. Having said that, the user is free to use lazy allocation if it is in a sleepable context by simply deferring the allocation of the tfm. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
